package utils;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

public class MyBatisUtils {
    private static SqlSessionFactory sqlSessionFactory;
    static {
        try {
            String resource = "mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    //传入true，表示自动提交
    public static SqlSession openSession(boolean flag){
        SqlSession session = sqlSessionFactory.openSession(flag);
        return session;
    }
    public static SqlSession openSession(){
        SqlSession session = sqlSessionFactory.openSession();
        return session;
    }
    public static void commitAndClose(SqlSession session){
        session.commit();
        session.close();
    }
}
